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Note 3 - Accrued Liabilities - Accrued Liabilities (Details) - USD ($)
$ in Thousands
Sep. 30, 2020
Dec. 31, 2019
Accrued compensation expenses $ 8,382 $ 10,100
Accrued other 2,063 3,634
Total accrued liabilities $ 10,445 $ 13,734